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On 2 Nov 2001, at 19:36, Keith Park wrote: > OK... I hadnt been able to picture this in my head... it makes sense > now! so long as the adjusters can take out the distance without > changing the valve geometry. Right > Berg explains that we actually create a hardness layer during > breakin and is why breakin is so critical... I think there is > surface hardness when the came is manf though. I think there are various ways to create the right surface. Work hardening upon first use seems to me to be a terribly undependable way to do this, but I think that is what is done with some cams. I'd rather see them induction hardened like crank journals and gear teeth, but whatever works reliably is fine with me. - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------------------------- Search old messages on the Web! Visit http://www.vwtype3.org/list/